Earthquakes in the DR

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 2.9
Date-Time • 20 Apr 2018 21:25:32 UTC
• 20 Apr 2018 17:25:32 near epicenter
• 20 Apr 2018 17:25:32 standard time in your timezone
Location 19.160N 67.967W
Depth 88 km
Distances • 99 km (61 miles) NE (52 degrees) of Higuey, La Altagracia, Dominican Republic
• 118 km (73 miles) NW (313 degrees) of Aguadilla, PR
• 118 km (74 miles) NW (312 degrees) of Cab�n, PR
• 133 km (83 miles) NE (52 degrees) of La Romana, La Romana, Dominican Republic
• 207 km (129 miles) WNW (292 degrees) of SAN JUAN, Puerto Rico
Location Uncertainty Horizontal: 2.8 km; Vertical 3.2 km
Parameters Nph = 14; Dmin = 85.4 km; Rmss = 0.21 seconds; Gp = 223°
Version =
Event ID pr 20181100 ***This event has been revised.

 

[Cdn_Gringo]

M3.1 - MONA PASSAGE
Preliminary Earthquake Report
Magnitude 3.1
Date-Time • 21 Apr 2018 06:00:35 UTC
• 21 Apr 2018 02:00:35 near epicenter
• 21 Apr 2018 02:00:35 standard time in your timezone
Location 18.716N 68.714W
Depth 77 km
Distances • 11 km (7 miles) N (358 degrees) of Higuey, La Altagracia, Dominican Republic
• 35 km (22 miles) E (100 degrees) of El Seybo, El Seybo, Dominican Republic
• 42 km (26 miles) NE (40 degrees) of La Romana, La Romana, Dominican Republic
• 132 km (82 miles) E (79 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 3.7 km; Vertical 2.5 km
Parameters Nph = 17; Dmin = 180.4 km; Rmss = 0.36 seconds; Gp = 163°
Version =
Event ID pr 20181110 ***This event has been revised.

 

[william webster]

Uh-Oh..... on land this time.....

 

[Cdn_Gringo]

The underwater shakes are the ones with the potential 1-2 punch.

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.1
Date-Time • 24 Apr 2018 06:46:25 UTC
• 24 Apr 2018 02:46:25 near epicenter
• 24 Apr 2018 02:46:25 standard time in your timezone
Location 18.053N 68.147W
Depth 54 km
Distances • 87 km (54 miles) SE (137 degrees) of Higuey, La Altagracia, Dominican Republic
• 97 km (60 miles) ESE (116 degrees) of La Romana, La Romana, Dominican Republic
• 100 km (62 miles) WSW (251 degrees) of Rincon, PR
• 197 km (122 miles) ESE (104 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 1.8 km; Vertical 2.5 km
Parameters Nph = 28; Dmin = 112.9 km; Rmss = 0.29 seconds; Gp = 190°
Version =
Event ID pr 20181140 ***This event has been revised.

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.1
Date-Time • 24 Apr 2018 11:17:54 UTC
• 24 Apr 2018 07:17:54 near epicenter
• 24 Apr 2018 07:17:54 standard time in your timezone
Location 18.671N 68.243W
Depth 94 km
Distances • 50 km (31 miles) E (83 degrees) of Higuey, La Altagracia, Dominican Republic
• 81 km (50 miles) ENE (71 degrees) of La Romana, La Romana, Dominican Republic
• 85 km (53 miles) E (97 degrees) of El Seybo, El Seybo, Dominican Republic
• 181 km (112 miles) E (84 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 4.8 km; Vertical 3.2 km
Parameters Nph = 10; Dmin = 146.0 km; Rmss = 0.29 seconds; Gp = 172°
Version =
Event ID pr 20181140 ***This event has been revised.




Just for a bit of perspective. All the shakes in our region within the last 7 days.

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.2
Date-Time • 29 Apr 2018 07:38:22 UTC
• 29 Apr 2018 03:38:22 near epicenter
• 29 Apr 2018 03:38:22 standard time in your timezone
Location 18.785N 68.228W
Depth 164 km
Distances • 54 km (34 miles) ENE (70 degrees) of Higuey, La Altagracia, Dominican Republic
• 86 km (53 miles) E (89 degrees) of El Seybo, El Seybo, Dominican Republic
• 88 km (54 miles) ENE (63 degrees) of La Romana, La Romana, Dominican Republic
• 184 km (114 miles) E (80 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 8.0 km; Vertical 2.9 km
Parameters Nph = 26; Dmin = 129.1 km; Rmss = 0.48 seconds; Gp = 177°
Version =
Event ID pr 20181190 ***This event has been revised.



7 day summary:

 

[Salsafan]

How long has this with daily/weekly around 3 been going on?

 

[Cdn_Gringo]

For quite a while now. I casually noticed the uptick in frequency about 8 months ago. Since then I have paid more attention can safely say this period of increased frequency is still accelerating.

 

[Cdn_Gringo]

Rockin & Rollin in the DR

5 in the last 24 hours. The two in the southeast occurred with 16 minutes of each other. All were 3.0 - 3.3 in magnitude.

Additionally three near Puerto Rico overnight. 2 very close to each other on the north coast of PR and one to the south.

That's 8 tremors since the last time I checked. These are small shakes, and most are quite deep so the surface effects are minimal and most people will not notice them as they go about their business. I have not seen this level of ongoing seismic activity in the four years that I have been monitoring this area.

The frequency alone is not sufficient to consider running away believing the island is about to sink. However, activity is occurring with a frequency that shouldn't be dismissed outright. There is almost continuous movement within the earth's crust in our neighborhood - this still developing trend could become significant in the medium term if the depth of these tremors begins to move closer to the surface (ie the seabed.)

When it comes to earthquakes, no one really knows for sure what's next. As sound advice for anyone who lives in an area prone to large earthquakes, it may be prudent to take some time to think about where you would go and how you would get there if a significant earthquake was to occur - especially if you live within about 3 miles of the coast line. It is not inconceivable to think that people in the coastal zone would need to gain a minimum of 600 feet of elevation very quickly, possibly in the dark, amidst debris and panicking people. It might also be a good idea to toss some stable food, water, clothes and other essentials in a duffel bag that you can grab on the way out the door if you need to move quickly. Based on the location of all the little dots on the map over time, damaging waves if generated by an earthquake, could arrive at sections of our coastline in less than 15 minutes and certainly in less than 30 minutes traveling at open ocean speeds of more than 300 mph.

Let me be clear. I am not saying that any sort of damaging earthquake is imminent or even likely. I am not a trained seismologist. I will say, in light of the seismic activity in our region over the last six months and the apparent increase in overall tectonic shifting, if an event were to occur with direct impact on the landmass, I couldn't say I was taken completely by surprise.

 

[reilleyp]

5 in the last 24 hours. The two in the southeast occurred with 16 minutes of each other. All were 3.0 - 3.3 in magnitude.

Additionally three near Puerto Rico overnight. 2 very close to each other on the north coast of PR and one to the south.

That's 8 tremors since the last time I checked. These are small shakes, and most are quite deep so the surface effects are minimal and most people will not notice them as they go about their business. I have not seen this level of ongoing seismic activity in the four years that I have been monitoring this area.

The frequency alone is not sufficient to consider running away believing the island is about to sink. However, activity is occurring with a frequency that shouldn't be dismissed outright. There is almost continuous movement within the earth's crust in our neighborhood - this still developing trend could become significant in the medium term if the depth of these tremors begins to move closer to the surface (ie the seabed.)

When it comes to earthquakes, no one really knows for sure what's next. As sound advice for anyone who lives in an area prone to large earthquakes, it may be prudent to take some time to think about where you would go and how you would get there if a significant earthquake was to occur - especially if you live within about 3 miles of the coast line. It is not inconceivable to think that people in the coastal zone would need to gain a minimum of 600 feet of elevation very quickly, possibly in the dark, amidst debris and panicking people. It might also be a good idea to toss some stable food, water, clothes and other essentials in a duffel bag that you can grab on the way out the door if you need to move quickly. Based on the location of all the little dots on the map over time, damaging waves if generated by an earthquake, could arrive at sections of our coastline in less than 15 minutes and certainly in less than 30 minutes traveling at open ocean speeds of more than 300 mph.

Let me be clear. I am not saying that any sort of damaging earthquake is imminent or even likely. I am not a trained seismologist. I will say, in light of the seismic activity in our region over the last six months and the apparent increase in overall tectonic shifting, if an event were to occur with direct impact on the landmass, I couldn't say I was taken completely by surprise.

View attachment 2854

600 Feet of elevation? How big of a tsunami are you expecting?

 

[Cdn_Gringo]

Better safe than sorry. As high as you can get in the time available. There will be several successive waves and lots of debris that will impact buildings and the countryside causing more debris and more soil collapse on unstable hillsides. Get to the highest hill you can get to and keep climbing until you can't get any higher.

The volume of sea water that can flow across the land until it reaches an elevated barrier is staggering. It's too late when your feet get wet or the side of the hill you are on collapses due to sudden erosion.

There is no need to panic. I'm just recommending that those who are vulnerable consider a plan for a possibility that hopefully never materializes. Try to make the best response plan you can. If the need arises, many will probably not have a lot of time to react. If a 300 foot hill is all you've got, then that's all you've got. If you have a choice and all other considerations are equal, choose the higher of the two. I'm not qualified to tell anyone what to do, just offering suggestions that people are free to disregard or amend as they see fit.

 

[Cdn_Gringo]

2 more this morning...

One closest to PR was a 2.8 so I didn't copy the notice data into this post.

Preliminary Earthquake Report
Magnitude 3.3
Date-Time • 30 Apr 2018 11:37:21 UTC
• 30 Apr 2018 07:37:21 near epicenter
• 30 Apr 2018 07:37:21 standard time in your timezone
Location 19.320N 68.452W
Depth 42 km
Distances • 82 km (51 miles) NNE (19 degrees) of Higuey, La Altagracia, Dominican Republic
• 87 km (54 miles) NE (45 degrees) of El Seybo, El Seybo, Dominican Republic
• 93 km (58 miles) E (82 degrees) of Samana, Samana, Dominican Republic
• 113 km (70 miles) NNE (29 degrees) of La Romana, La Romana, Dominican Republic
• 182 km (113 miles) ENE (60 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 2.9 km; Vertical 10.1 km
Parameters Nph = 10; Dmin = 198.2 km; Rmss = 0.37 seconds; Gp = 240°
Version =
Event ID pr 20181200 ***This event has been revised.

 

[mobrouser]

.....it may be prudent to take some time to think about where you would go and how you would get there if a significant earthquake was to occur - especially if you live within about 3 miles of the coast line. It is not inconceivable to think that people in the coastal zone would need to gain a minimum of 600 feet of elevation very quickly......

I will send a pm to WW right away asking for his Cabrera address so I can put it into my GPS.

It's good to know people in high places. :classic:

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.4
Date-Time • 1 May 2018 06:00:29 UTC
• 1 May 2018 02:00:29 near epicenter
• 1 May 2018 02:00:29 standard time in your timezone
Location 19.595N 68.419W
Depth 31 km
Distances • 105 km (65 miles) ENE (66 degrees) of Samana, Samana, Dominican Republic
• 112 km (70 miles) NE (35 degrees) of El Seybo, El Seybo, Dominican Republic
• 113 km (70 miles) NNE (16 degrees) of Higuey, La Altagracia, Dominican Republic
• 142 km (88 miles) NNE (24 degrees) of La Romana, La Romana, Dominican Republic
• 202 km (125 miles) NE (53 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 3.3 km; Vertical 30.4 km
Parameters Nph = 24; Dmin = 192.0 km; Rmss = 0.45 seconds; Gp = 258°
Version =
Event ID pr 20181210 ***This event has been revised.

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.2
Date-Time • 1 May 2018 07:33:02 UTC
• 1 May 2018 03:33:02 near epicenter
• 1 May 2018 03:33:02 standard time in your timezone
Location 18.168N 68.284W
Depth 75 km
Distances • 68 km (42 miles) SE (138 degrees) of Higuey, La Altagracia, Dominican Republic
• 78 km (49 miles) ESE (112 degrees) of La Romana, La Romana, Dominican Republic
• 104 km (65 miles) SE (130 degrees) of El Seybo, El Seybo, Dominican Republic
• 180 km (112 miles) ESE (102 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 2.3 km; Vertical 2.8 km
Parameters Nph = 21; Dmin = 131.8 km; Rmss = 0.36 seconds; Gp = 175°
Version =
Event ID pr 20181210 ***This event has been revised.

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.0
Date-Time • 2 May 2018 07:01:45 UTC
• 2 May 2018 03:01:45 near epicenter
• 2 May 2018 03:01:45 standard time in your timezone
Location 18.293N 68.020W
Depth 96 km
Distances • 81 km (50 miles) ESE (116 degrees) of Higuey, La Altagracia, Dominican Republic
• 81 km (50 miles) W (266 degrees) of Rincon, PR
• 82 km (51 miles) W (268 degrees) of Stella, PR
• 101 km (63 miles) E (99 degrees) of La Romana, La Romana, Dominican Republic
• 200 km (124 miles) W (264 degrees) of SAN JUAN, Puerto Rico
Location Uncertainty Horizontal: 2.3 km; Vertical 2.0 km
Parameters Nph = 26; Dmin = 103.0 km; Rmss = 0.37 seconds; Gp = 155°
Version =
Event ID pr 20181220 ***This event has been revised.

-------- 30 minutes later ---------

Preliminary Earthquake Report
Magnitude 3.2
Date-Time • 2 May 2018 07:32:49 UTC
• 2 May 2018 03:32:49 near epicenter
• 2 May 2018 03:32:49 standard time in your timezone
Location 19.004N 68.111W
Depth 60 km
Distances • 76 km (47 miles) NE (56 degrees) of Higuey, La Altagracia, Dominican Republic
• 101 km (63 miles) ENE (75 degrees) of El Seybo, El Seybo, Dominican Republic
• 111 km (69 miles) NE (55 degrees) of La Romana, La Romana, Dominican Republic
• 202 km (125 miles) ENE (74 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 4.3 km; Vertical 11.9 km
Parameters Nph = 15; Dmin = 126.2 km; Rmss = 0.42 seconds; Gp = 335°
Version =
Event ID pr 20181220 ***This event has been revised.


Each dot on the map represents a tremor that has occurred in the last 24 hours. I am astounded by the amount of seismic activity that is going on. I have not seen anything like this before.

 

[Cdn_Gringo]

Another 4 small shakes since my last post this morning.

 

[Cdn_Gringo]

Preliminary Earthquake Report
Magnitude 3.3
Date-Time • 3 May 2018 10:05:50 UTC
• 3 May 2018 06:05:50 near epicenter
• 3 May 2018 06:05:50 standard time in your timezone
Location 19.718N 68.653W
Depth 73 km
Distances • 91 km (56 miles) NE (51 degrees) of Samana, Samana, Dominican Republic
• 113 km (70 miles) NNE (21 degrees) of El Seybo, El Seybo, Dominican Republic
• 122 km (76 miles) N (3 degrees) of Hig�ey, La Altagracia, Dominican Republic
• 147 km (91 miles) NNE (13 degrees) of La Romana, La Romana, Dominican Republic
• 192 km (119 miles) NE (45 degrees) of SANTO DOMINGO, Dominican Republic
Location Uncertainty Horizontal: 5.9 km; Vertical 9.3 km
Parameters Nph = 12; Dmin = 256.4 km; Rmss = 0.38 seconds; Gp = 269°
Version =
Event ID pr 20181230 ***This event has been revised.

 

[Salsafan]

Maybe one should have a bike for offroad ready to go, and some practice on it.